JPS6114588Y2 - - Google Patents
Info
- Publication number
- JPS6114588Y2 JPS6114588Y2 JP3003579U JP3003579U JPS6114588Y2 JP S6114588 Y2 JPS6114588 Y2 JP S6114588Y2 JP 3003579 U JP3003579 U JP 3003579U JP 3003579 U JP3003579 U JP 3003579U JP S6114588 Y2 JPS6114588 Y2 JP S6114588Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- cylinder head
- cylinder block
- radiator
- cooling water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000498 cooling water Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
本考案は、水等の冷媒液を使つて内燃機関を冷
却する装置に関するものである。[Detailed Description of the Invention] The present invention relates to a device for cooling an internal combustion engine using a refrigerant liquid such as water.
従来の水冷式内燃機関においては、機関本体と
ラジエータとの間に冷却水の循環回路を形成し、
ラジエータで放熱した冷却水を冷却水ポンプにて
先づシリンダブロツクのジヤケツトに入れ、次い
でシリンダブロツクのジヤケツトからシリンダヘ
ツドのジヤケツトを経て前記ラジエータに戻すよ
うに構成しており、且つシリンダヘツドからの冷
却水アウトレツトにはサーモスタツト弁を設け、
シリンダヘツドにおけるジヤケツト内の冷却水温
がある温度以上になれば、ラジエータとの間を前
記循環を行なつて機関を冷却するようにしてい
る。ところがこのように冷却水を先づシリンダブ
ロツクのジヤケツトに入れ、ここからシリンダヘ
ツドのジヤケツトに流れるようにすることは、シ
リンダブロツクの温度はシリンダヘツドの温度よ
りも常に低く、従つてシリンダブロツクのピスト
ンに対する潤滑油の温度も低いのでピストンの摺
動摩擦抵抗が大きくなり機関的損失が増大するこ
とになり、しかも、機関の冷寒始動からの暖機運
転に際してシリンダブロツクのジヤケツト内で暖
つた冷却水は順次シリンダヘツド側へ上昇し、シ
リンダブロツクの温度上昇はシリンダヘツドより
著しく遅いから、暖気運転の時間が長くかかるば
かりか、その間に消費する燃料の量が多くなるの
である。そしてこれを防止するために前記サーモ
スタツト弁の開弁温度を高く設定することは、シ
リンダヘツドの温度が著しく高くなるので、吸入
空気量の低下及びノツク発生等により機関の出力
が低下するばかりか、機関のオーバーヒートを生
じ易いのであり、更にはラジエータへの冷却水温
が高くなり、ラジエータへの接続ホース及び各種
シールパツキンの耐久性を低下させる等の不具合
を生じるから、前記サーモスタツト弁の開弁温度
は80〜85℃に設定しているのが現状である。 In conventional water-cooled internal combustion engines, a cooling water circulation circuit is formed between the engine body and the radiator.
Cooling water radiated by the radiator is first introduced into the jacket of the cylinder block by a cooling water pump, and then returned to the radiator from the jacket of the cylinder block via the jacket of the cylinder head. The water outlet is equipped with a thermostatic valve,
When the temperature of the cooling water in the jacket of the cylinder head exceeds a certain temperature, the cooling water is circulated between the cylinder head and the radiator to cool the engine. However, by introducing the cooling water into the cylinder block jacket first and allowing it to flow from there to the cylinder head jacket, the temperature of the cylinder block is always lower than that of the cylinder head, and therefore the temperature of the cylinder block piston is lower than that of the cylinder head. Since the temperature of the lubricating oil is also low, the sliding frictional resistance of the piston increases and the engine loss increases.Moreover, when the engine is warmed up from a cold start, the cooling water that warms up inside the jacket of the cylinder block increases. The temperature rises sequentially toward the cylinder head, and the temperature rise of the cylinder block is much slower than that of the cylinder head, which not only takes a long time to warm up, but also increases the amount of fuel consumed during that time. In order to prevent this, setting the opening temperature of the thermostat valve high will not only cause the cylinder head temperature to rise significantly, which will not only reduce the engine output due to a decrease in the amount of intake air and the occurrence of knocks, etc. , the engine tends to overheat, and furthermore, the temperature of the cooling water to the radiator becomes high, causing problems such as decreasing the durability of the hoses connected to the radiator and various seal packings. Currently, the temperature is set at 80-85°C.
本考案は、一つのラジエータから機関側への冷
媒液を、シリンダブロツク側とシリンダヘツド側
との２つに分けて別々に供給する一方、シリンダ
ブロツク側及びシリンダヘツド側から出た冷媒液
を一つにまとめてラジエータに接続して循環を行
なわせるに当り、シリンダブロツク側の冷媒液温
をシリンダヘツド側の冷媒液温よりも高く設定す
ることにより、機関の機械的損失の低減を図ると
共に、暖機運転の時間を短縮し、且つラジエータ
への接続用ホース等の耐久性の向上を図るもので
ある。 In this invention, the refrigerant liquid from one radiator to the engine side is divided into two parts, the cylinder block side and the cylinder head side, and is supplied separately, while the refrigerant liquid discharged from the cylinder block side and the cylinder head side is unified. When connecting the refrigerant to a radiator for circulation, the temperature of the refrigerant on the cylinder block side is set higher than the temperature of the refrigerant on the cylinder head side, thereby reducing mechanical loss in the engine. This aims to shorten the warm-up time and improve the durability of the hose for connection to the radiator.
次に本考案の一例を図面について説明するに、
図において１はシリンダブロツク２とシリンダヘ
ツド３とからなる機関を示し、シリンダブロツク
２及びシリンダヘツド３にはウオータジヤケツト
４，５が相互に連通しないように各々独立して設
けられている。６は自動車のフロントグリル等の
適宜箇所に配設したラジエータ、７は該ラジエー
タ６のロアータンク８に管路９を介して接続され
た冷却水ポンプを示し、該冷却水ポンプ７の吐出
管１０は２叉に分岐してその一方１１が前記シリ
ンダブロツク２のジヤケツト４の適宜箇所に、他
方１２が前記シリンダヘツド３のジヤケツト５の
適宜箇所に各々接続されている。 Next, an example of the present invention will be explained with reference to the drawings.
In the figure, reference numeral 1 indicates an engine consisting of a cylinder block 2 and a cylinder head 3, and water jackets 4 and 5 are provided independently in the cylinder block 2 and cylinder head 3 so as not to communicate with each other. Reference numeral 6 indicates a radiator disposed at an appropriate location such as the front grill of the automobile, and reference numeral 7 indicates a cooling water pump connected to the lower tank 8 of the radiator 6 via a pipe 9. A discharge pipe 10 of the cooling water pump 7 is It is branched into two parts, one of which 11 is connected to an appropriate location on the jacket 4 of the cylinder block 2, and the other 12 is connected to an appropriate location of the jacket 5 of the cylinder head 3, respectively.
シリンダブロツク２におけるジヤケツト４のア
ウトレツトチヤンバー１３及びシリンダヘツド３
におけるジヤケツト５のアウトレツトチヤンバー
１４には、合流チヤンバー１７との間に各チヤン
バー１３，１４内の温度がある温度になれば開く
ようにしたサーモスタツト弁１５，１６を各々備
え、合流チヤンバー１７を管路１８を介して前記
ラジエータ６のアツパタンク１９に接続し、前記
両サーモスタツト弁１５，１６のうち、シリンダ
ブロツク２におけるサーモスタツト弁１５の開弁
温度を、例えばシリンダヘツド３におけるサーモ
スタツト弁１６の開弁温度を70℃に設定した場合
には90℃というように、シリンダヘツド３におけ
るサーモスタツト弁１６の開弁温度よりも高く設
定して成るものであり、他の実施例においては第
２図に示すようにシリンダブロツク２におけるア
ウトレツトチヤンバー１３の上部にシリンダヘツ
ド３におけるアウトレツトチヤンバー１４を、シ
リンダヘツド３におけるアウトレツトチヤンバー
１４の上部にラジエータ６への管路１８が接続す
る合流チヤンバー１７を各々設け、シリンダブロ
ツクアウトレツトチヤンバー１３とシリンダヘツ
ドアウトレツトチヤンバー１４との間にシリンダ
ブロツク用サーモスタツト弁１５を、シリンダヘ
ツドアウトレツトチヤンバー１４と合流チヤンバ
ー１７との間にシリンダヘツド用サーモスタツト
弁１６を設けたものにしても良い。なお、本考案
によるシリンダブロツク用サーモスタツト弁、シ
リンダヘツド用サーモスタツト弁の開弁温度をそ
れぞれＴB，ＴHとすれば、ＴB≧90℃，ＴH≧70
℃，ＴB−ＴH≦40℃の条件を満す範囲でＴB，ＴH
を設定すれば良い。 Outlet chamber 13 of jacket 4 in cylinder block 2 and cylinder head 3
The outlet chamber 14 of the jacket 5 is provided with a thermostatic valve 15, 16 between the outlet chamber 14 and the merging chamber 17, which opens when the temperature inside each chamber 13, 14 reaches a certain temperature. is connected to the upper tank 19 of the radiator 6 via a pipe 18, and the opening temperature of the thermostat valve 15 in the cylinder block 2 of the two thermostat valves 15, 16 is controlled, for example, by the thermostat valve in the cylinder head 3. When the valve opening temperature of the thermostat valve 16 is set at 70°C, it is set higher than the opening temperature of the thermostat valve 16 in the cylinder head 3, such as 90°C. As shown in Figure 2, the outlet chamber 14 in the cylinder head 3 is connected to the upper part of the outlet chamber 13 in the cylinder block 2, and the pipe line 18 to the radiator 6 is connected to the upper part of the outlet chamber 14 in the cylinder head 3. A cylinder block thermostatic valve 15 is provided between the cylinder block outlet chamber 13 and the cylinder head outlet chamber 14, and a cylinder block thermostatic valve 15 is provided between the cylinder head outlet chamber 14 and the cylinder head outlet chamber 17. A thermostatic valve 16 for the cylinder head may be provided in the cylinder head. Furthermore, if the opening temperatures of the thermostat valve for the cylinder block and the thermostat valve for the cylinder head according to the present invention are respectively T B and T H , then T B ≧90°C and T H ≧70.
℃, T B - T H within the range that satisfies the condition of ≦40℃
All you have to do is set .
このように構成すれば、機関の冷寒始動からの
暖機運転に際して両サーモスタツト弁１５，１６
が閉じているとき、両ジヤケツト４，５の冷却水
は各々のジヤケツト内で暖められ、シリンダブロ
ツク２におけるジヤケツト４内の冷却水は、従来
のように温度上昇と共に順次シリンダヘツド３の
ジヤケツト５に上昇することがないから、シリン
ダブロツク２は急速に暖められることになつて、
暖機運転の時間を短縮できると共に、暖機運転に
要する燃料の消費量を低減できるのである。 With this configuration, both thermostat valves 15 and 16 are activated during warm-up operation after a cold start of the engine.
When the cylinder block 2 is closed, the cooling water in both jackets 4 and 5 is warmed in each jacket, and the cooling water in the jacket 4 in the cylinder block 2 is sequentially transferred to the jacket 5 in the cylinder head 3 as the temperature increases, as in the conventional case. Since it does not rise, cylinder block 2 is heated rapidly.
Not only can the warm-up time be shortened, but also the amount of fuel consumed for warm-up can be reduced.
そして、機関の始動後、シリンダヘツド３にお
けるジヤケツト５の冷却水温がそのサーモスタツ
ト弁１６の設定温度に達すれば、当該サーモスタ
ツト弁１６が開弁し、ラジエータ６との間の循環
を開始することになつて、シリンダヘツド３の温
度をサーモスタツト弁１６の開弁温度近くに保持
するように冷却する一方、シリンダブロツク２の
ジヤケツト４内の冷却水温がそのサーモスタツト
弁１５の設定温度に達すれば、当該サーモスタツ
ト弁１５の開によつてラジエータ６との間の循環
を開始して、シリンダブロツク２の温度をサーモ
スタツト弁１５の開弁温度近くに保持するように
冷却する。この場合、シリンダブロツク２におけ
るサーモスタツト弁１５の開弁温度ＴBを、シリ
ンダヘツド３におけるサーモスタツト弁１６の開
弁温度ＴHより高い値に設定したことにより、シ
リンダブロツク２の温度は比較的高い温度に、シ
リンダヘツド３の温度は比較的低い温度に各々す
ることができる一方、シリンダブロツク２におけ
るサーモスタツト弁１５から流出する比較的高い
温度の冷却水は、シリンダヘツド３におけるサー
モスタツト弁１６からの比較的低い温度の冷却水
と合流するから、合流後の冷却水の温度は両者の
中間の温度になつてラジエータ６に流れるのであ
る。すなわち、本考案によればシリンダヘツドの
温度を低く保つた状態の下で、シリンダブロツク
の温度を高くするように冷却できるから、シリン
ダブロツク２におけるピストン又は軸受等に対す
る潤滑油の油温が高く、その粘性の低下によつて
摺動摩擦抵抗を低下して機械的損失を低減でき
て、機関の機械的効率を向上できると共に、シリ
ンダブロツクからの放熱が少なくなつて熱効率を
も向上できるのであり、一方、シリンダヘツド３
の温度を低くできるから、吸入空気量の低下及び
ノツクの発生を抑制できると共に、機関全体のオ
ーバーヒートをも確実に防止できるものである。 After the engine is started, when the temperature of the cooling water in the jacket 5 in the cylinder head 3 reaches the set temperature of the thermostat valve 16, the thermostat valve 16 opens and circulation with the radiator 6 begins. When the temperature of the cylinder head 3 is maintained close to the opening temperature of the thermostat valve 16, the temperature of the cooling water in the jacket 4 of the cylinder block 2 reaches the set temperature of the thermostat valve 15. By opening the thermostatic valve 15, circulation between the cylinder block 2 and the radiator 6 is started, and the cylinder block 2 is cooled to maintain the temperature near the opening temperature of the thermostatic valve 15. In this case, by setting the valve-opening temperature T B of the thermostat valve 15 in the cylinder block 2 to a value higher than the valve-opening temperature T H of the thermostat valve 16 in the cylinder head 3, the temperature of the cylinder block 2 is relatively low. The relatively high temperature cooling water flowing out of the thermostatic valve 15 in the cylinder block 2 is connected to the thermostatic valve 16 in the cylinder head 3, while the temperature in the cylinder head 3 can be brought to a relatively low temperature. Since the cooling water from the radiator 6 is merged with relatively low temperature cooling water from the radiator 6, the temperature of the merging cooling water becomes an intermediate temperature between the two, and flows to the radiator 6. That is, according to the present invention, since the cylinder block can be cooled to a high temperature while the cylinder head is kept at a low temperature, the temperature of the lubricating oil for the piston, bearing, etc. in the cylinder block 2 is high. The reduction in viscosity reduces sliding friction resistance and reduces mechanical loss, improving the mechanical efficiency of the engine, as well as reducing heat radiation from the cylinder block and improving thermal efficiency. , cylinder head 3
Since the temperature of the engine can be lowered, it is possible to suppress a decrease in the amount of intake air and the occurrence of knocks, and it is also possible to reliably prevent overheating of the entire engine.
しかも、シリンダブロツクを冷却したあとの比
較的高い温度の冷却水及びシリンダヘツドを冷却
したあとの比較的低い温度の冷却水は一つに合流
し、両者の中間の温度になつてラジエータに流れ
るから、従来のようにシリンダブロツクの温度を
高くすることによつてラジエータへの流入冷却水
の温度が高くなり過ぎるようなことがなく、ラジ
エータへの接続用ホース及びラジエータのパツキ
ン等の耐久性を低下させない効果を有する。 Moreover, the relatively high temperature cooling water after cooling the cylinder block and the relatively low temperature cooling water after cooling the cylinder head merge into one and flow to the radiator at a temperature intermediate between the two. By raising the temperature of the cylinder block as in the past, the temperature of the cooling water flowing into the radiator does not become too high, which reduces the durability of the connection hose to the radiator and the radiator gasket. It has the effect of preventing
第１図は本考案の実施例装置の図、第２図は他
の実施例装置の図である。
１……機関、２……シリンダブロツク、３……
シリンダヘツド、４，５……ウオータジヤケツ
ト、６……ラジエータ、７……冷却水ポンプ、１
３，１４……アウトレツトチヤンバー、１５，１
６……サーモスタツト弁、１７……合流チヤンバ
ー。
FIG. 1 is a diagram of an apparatus according to an embodiment of the present invention, and FIG. 2 is a diagram of another embodiment of the apparatus. 1... Engine, 2... Cylinder block, 3...
Cylinder head, 4, 5...Water jacket, 6...Radiator, 7...Cooling water pump, 1
3,14... Outlet chamber, 15,1
6...Thermostatic valve, 17... Merging chamber.
Claims (1)
ンダヘツドのウオータジヤケツトを各々独立さ
せ、該両ウオータジヤケツトにラジエータのロア
ータンクからの冷却水管路を２叉に分岐して接続
する一方、前記両ウオータジヤケツトにおけるア
ウトレツトチヤンバーには、その各々にサーモス
タツト弁を設け、該両サーモスタツト弁のうちシ
リンダブロツクにおけるサーモスタツト弁の開弁
温度を、シリンダヘツドにおけるサーモスタツト
弁の開弁温度より高い温度に設定し、且つ、前記
両サーモスタツト弁からのアウトレツト管路を一
本の管路に合流して前記ラジエータのアツパータ
ンクに接続したことを特徴とする内燃機関の冷却
装置。 The water jacket of the cylinder block and the water jacket of the cylinder head are made independent, and the cooling water pipes from the lower tank of the radiator are connected to the two water jackets by branching into two, while the water jackets of the two water jackets are A thermostat valve is provided in each of the retrieval chambers, and of the two thermostat valves, the opening temperature of the thermostat valve in the cylinder block is set to a higher temperature than the opening temperature of the thermostat valve in the cylinder head. A cooling device for an internal combustion engine, characterized in that outlet pipes from both of the thermostat valves are merged into a single pipe and connected to an upper tank of the radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3003579U JPS6114588Y2 (en) | 1979-03-08 | 1979-03-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3003579U JPS6114588Y2 (en) | 1979-03-08 | 1979-03-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55130014U JPS55130014U (en) | 1980-09-13 |
| JPS6114588Y2 true JPS6114588Y2 (en) | 1986-05-07 |
Family
ID=28878927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3003579U Expired JPS6114588Y2 (en) | 1979-03-08 | 1979-03-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6114588Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009113366A1 (en) * | 2008-03-12 | 2009-09-17 | 本田技研工業株式会社 | Cooling system for internal combustion engine |
| WO2010150379A1 (en) * | 2009-06-25 | 2010-12-29 | 株式会社Tbk | Variable flow rate pump |
| JP5201418B2 (en) | 2009-11-10 | 2013-06-05 | アイシン精機株式会社 | Internal combustion engine cooling system and failure determination method in internal combustion engine cooling system |
| JP5583045B2 (en) * | 2011-02-10 | 2014-09-03 | 株式会社日本自動車部品総合研究所 | Engine cooling system |
-
1979
- 1979-03-08 JP JP3003579U patent/JPS6114588Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55130014U (en) | 1980-09-13 |
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